The M400 X-series features a free-floating M-LOK handguard, Magpul SL-K 6-position telescoping stock, Sig Flat Match Grade trigger, 16″ Chrome Moly barrel, and a 7075 T-6 aluminum receiver with a black hardcoat anodized finish.
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16″ Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15″ M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip
$1,499.99
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16″ Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15″ M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip
Total in Stock: 30
Total in Stock: 30
Additional information
| UPC | 798681664634 |
|---|---|
| Manufacturer | Sig Sauer |
| Manufacturer Part Number | RM400SDI16BP |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| Other Features | 6 POSITION MAGPUL SL STOCK |
| Overall Length | 36.5000 |
| Rate of Twist | 1:7" |
| Recoil Pad | No |
| Sights | No |
| Stock Color | BLACK |
| Finish Type | ANODIZED |
| Color | Black |
| Capacity | 30 |
| Length | 46.1000 |
| Barrel Length | 16 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Checkering | NO |
| Detachable Magazine | Yes |
| Dimension | 4.30 X 11.45 X 46.10 |
| Height | 4.3000 |
| Hinged Floorplate | No |
| Weight | 7 |
| Weight (lbs) | 7 |
| Width | 11.4500 |
| Stock Material | SYNTHETIC |
| Swivel Studs | No |
| Action | Semi-Auto |
| ATF Type | MODERN SPORTING RIFLE |
| Material | Aluminum |
| Safety | Ambidextrous Manual |
| Hand | Right Hand |
| Muzzle | Hybrid Compensator/Flash Hider |
| Stock Description | 6 Position Magpul SL-K |
| Stock Finish Group | Black |
| Trigger | Sig Flatblade Match |
| Weight Range | 7 lbs to 7.99 lbs |
| Barrel Description | 16" Chrome Moly Steel |
| Barrel Length Range | 16" to 16.99" |
| Product Type | AR |
| Subcategory | Modern Sporting Rifles |
| Stock Type | Magpul MOE SL |
| Model | M400 |
| Accessories | 1 Magazine |
| Description | M-LOK |
| Finish | Anodized |
| Grip Material | POLYMER |
| Barrel Finish | Black FNC |
| Barrel Type | 16" THREADED |
| Finish Color | Anodized |
| Handguards | 15" Free-Float M-LOK |
| Number of Magazines | 1 30 rd. |
| Series | X-Series |
| Stock Finish | Black |
| Thread Pattern | 1/2"-28 tpi |
| Units per Box | 1 |
| Adjustable Objective | False |
| Additional Feature 3 | Hybrid Compensator/Flash Hider |
| Additional Feature 2 | SIG Flatblade Match Trigger |
| Additional Feature 1 | Fluted Competition Barrel |
| Special | Threaded Barrel |
| Shipping Weight | 10.0 |
| ATF Model | M400 SDI |
| ATF Manufacturer | SIG SAUER INC |
| Scope Cover Included | False |
| Drilled and Tapped | False |
| Grip Type | MAGPUL SL Stock |
| Illuminated Reticle | False |
| NFA Thread Pattern | 1/2×28 |
| Package Height | 4.3 |
| Package Length | 46.4 |
| Package Width | 11.3 |


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